My mom actually bought two watch's exactly the same for her and me, I was able to wear it almost a week, and it started loosing time, it would not keep the right time if I wore it, if I left it on the table it kept perfect time, her's always worked right, and the one she got me worked fine as long as I didn't wear it lol, my daughter started wearing it, it worked fine on her, never did work right on me after that first week, my daughter still has it, that's been probably ten years ago.. I'm just glad she can get some good use of it.. I would love to be able to wear a watch..